Evidence map›Paper›PMID 21124790›Full record

ArticlePloS one2010

The functional -765G→C polymorphism of the COX-2 gene may reduce the risk of developing crohn's disease.

Hilbert S de Vries, Rene H M te Morsche, Martijn G H van Oijen, Iris D Nagtegaal, Wilbert H M Peters, Dirk J de Jong

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
1.3field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Article
  7. Pharmacogenetics of analgesic drugs.British journal of pain · 2013
    Article
  8. Cyclooxygenase-2 genetic polymorphism and stroke subtypes in Chinese.Journal of molecular neuroscience : MN · 2013
    Article
  9. Article
  10. TNF-alpha gene polymorphisms in Iranian Azari Turkish patients with inflammatory bowel diseases.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Hilbert S de VriesDepartment of Gastroenterology and Hepatology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands. h.devries@mdl.umcn.nl
Rene H M te Morsche
Martijn G H van Oijen
Iris D Nagtegaal
Wilbert H M Peters
Dirk J de Jong
Radboud University Nijmegen · NLRadboud University Medical Center · NLUniversity Medical Center Utrecht · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCyclooxygenase-2 (COX-2) is a key enzyme involved in the conversion of arachidonic acid into prostaglandins. COX-2 is mainly induced at sites of inflammation in response to proinflammatory cytokines such as interleukin-1α/β, interferon-γ and tumor necrosis factor-α produced by inflammatory cells.

aimThe aim of this study was to investigate the possible modulating effect of the functional COX-2 polymorphisms -1195 A→G and -765G→C on the risk for development of inflammatory bowel disease (IBD) in a Dutch population.

methodsGenomic DNA of 525 patients with Crohn's disease (CD), 211 patients with ulcerative colitis (UC) and 973 healthy controls was genotyped for the -1195 A→G (rs689466) and -765G→C (rs20417) polymorphisms. Distribution of genotypes in patients and controls were compared and genotype-phenotype interactions were investigated.

resultsThe genotype distribution of the -1195A→G polymorphism was not different between the patients with CD or UC and the control group. The -765GG genotype was more prevalent in CD patients compared to controls with an OR of 1.33 (95%CI 1.04-1.69, p<0.05). The -765GC and -765CC genotype carriers showed a tendency to be less frequent in patients with CD compared to controls, with ORs of 0.78 (95%CI: 0.61-1.00) and 0.49 (95%CI 0.22-1.08), respectively. Combining homozygous and heterozygous patients with the -765C allele showed a reduced risk for developing CD, with an OR of 0.75 (95%CI: 0.59-0.96). In the context of this, the G(-1195)G(-765)/A(-1195)C(-765) diplotype was significantly less common in patients with CD compared to controls, with an OR of 0.62 (95%CI: 0.39-0.98). For UC however, such an effect was not observed. No correlation was found between COX-2 diplotypes and clinical characteristics of IBD.

conclusionsThe -765G→C polymorphism was associated with a reduced risk for developing Crohn's disease in a Dutch population.

Indexed as

Polymorphism, Single NucleotideAdultCase-Control StudiesChi-Square DistributionColitis, UlcerativeCrohn DiseaseCyclooxygenase 2Disease ProgressionFemaleGene FrequencyGenetic Association StudiesGenetic Predisposition to DiseaseGenotypeHumansMaleMiddle AgedCyclooxygenase 2PTGS2 protein, human

Identifiers

PMID21124790
PMCPMC2991351
OpenAlexW2164589482

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.